Automatic door for elevator-wells



'(N'dModem' J. P. RUN KEL.-- AUTOMATIC DOOR FOR ELEVATOR WELLS.

No. 384,083.. Patented June 5, 1888.

77%7777/ film llllllll ll UNITED STATES PATENT OFFICE.

JOHN PH. RUNKEL, OF MILWAUKEE, \VISO ONSIN.

AUTOMATIC DOOR FOR ELEVATOR-WELLS.

SPECIFICATION forming part of Letters Patent No. 384,083, dated June 5, 1888.

Application filed September .17, 1887. Serial No. 150,792.

To aZZ whom it may concern.-

Be it known that 1, JOHN PH. RUNKEL, of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented new and useful Improvements in Automatic Doors for Elevatorells; and I do hereby declare the following to be a full, clear, and exact description of said invention, reference being had to the accompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

The object of my invention is to provide means whereby,by the passage of the elevatorcar up and down, the doors in the different stories of the building opening into the elevator-well can be opened and closed, if desired, and in which such opening and closing of the doors is under the control of the operator; and my invention consists in certain new mechanical devices, to be hereinafter distinctly described and claimed.

In the drawings, Figure 1 is asectional view of a portion of the sides of the elevator-well and of the car therein. Fig. 2 is a vertical section of my improved mechanism as attached and combined with the elevatorcar and with the sides of the elevatorwell. Fig. 3 is a view of a side of the elevator-well,showing the door thereof in connection therewith. Fig. 4 is a horizontal section of portions of my im proved mechanism on line m a of Fig. 2. Fig. 5 is a detail of the mechanism.

The same letters refer to like parts in all the views.

In the drawings, A A are the two sides of the elevator-well,andB is the third side of the well and has therein an opening closed by the door 0, which door is retained in position by grooves or guards at its top and bottom se cured to the side B, and in which it is adapted to slide back and forth horizontally.

The door 0 is provided with a horizontal toothed rack, D, which rack meshes with a cog-wheel, E, located near the rear of the door when closed, as shown in Fig. 3, which cogwheel is supported on its center pin or shaft, S, which rotates in the standard F and bracket U, which standard at its ends above and be low the door 0 is secured to the side B.

G is the body of the elevator-car, having a supporting-yoke, H, to which the hoistingcable I and the safety clutch-lever J are se- (No model.)

cured. On the side of the elevator car are two movable plates, K and L, these plates being provided with two diagonal slots, M M and N N, by and through which these plates are secured movably to the side of the car by pins V V, passing through the slots and fixedinto the side of the car, which pins are provided with heads to retain the plates thereon. The slots M M of the upper plate, K, are inclined outwardly downwardly and the slots N N of the plate L are inclined downwardly inwardly, the two plates being placed in contact one above the other in the position shown in Fig. 1. A lever, O, is pivoted on the under surface to the floor of the car, and at one end is attached by means of the connecting-rod P to the lower end of the plate L, and at the other end the lever is provided with a pedal, Q,projecting up through an aperture in the floor of the car, and is adapted to receive pressure from the foot of the operator. It will be understood that by means of a downward pressure applied to the pedal Q the plate L will be forced upward and outward, and thereby the plate K will be forced upward and inward to the positions shown in Fig. 5. By gravity the plates K and L and the lever O assume the positions shown in Fig. 1.

The plates K and L are located on the side of the car opposite to the wheel E, and the pinion R is secured rigidly to the wheel by means of the common supporting pin or shaft, S, to which both the pinion R and wheel E are firmly secured. The plates K and L are each provided, the one on its outer and the other on its inner edge, with a flange, T, having teeth along its inner margin constructed and adapted to mesh with the pinion R, and the plates are'so located on the car that when it passes the pinion R and the plates K and L are in their normal position (shown in Fig. 1) they will not engage with the pinion R; but when raised into the position shown in Fig. 5 they will engage with the pinion, so that as the car goes up the teeth on the plate K will engage with the pinion R, causing it to rotate, thereby forcing the door 0 open by and through the rotating wheel E and rack D, and when the car passes on the pinion R will be caught by the teeth on the plate L and will be caused to rotate in the opposite direction, thereby closing the door 0. When the car descends,

the teeth on the plate L will engage with the pinion R and three the door open again, and as the door passes along the pinion will engage with the teeth on thepHte K, whereby the door will be closed. The rack D is of such length and the wheel E is of such size with reference to each other and with reference to the-pinion R and the teeth on each of the flanges T as to cause a complete opening or closing of the door during the time the teeth on the plate K or L are passing their engagement with the pinion R. The plates K and L 7, are also so located on, the car that as the car passes up and down in the well the point of junction between the plates K and L will be car is at that point the door may be opened or closed by the operator, if desired, entirely independent of my devices for operating the door. The bracket Uis secured at its ends to the standard F and passes outside of the pinion R, being adapted and used to support the center pin or shaft, S, which passes through it, as well as through the standard F.

What I claim as new, and desire to secure by,

Letters Patent, is

1. The combination of two plates, K and L, movably secured to the side of an elevator-car, G, and provided with toothed flanges T, and the lever 0, connected at one end to the lower plates, K and L, secured to the side of the car and provided with reversed teeth which mesh on opposite sides with the single pinion R, whereby they are adapted to rotate it alternately in the reverse direction,substantiall y as and for the purpose described.

3. In devices for operating elevatorwell doors, the plates K and L, provided, respectively, with the inclined slots M M and N N, and with the toothed flange T, and the therewith-connected operating-lever O, in combination with gear secured to the side of the well, and a rack secured to the door, whereby the door is opened and elosed,substantially as described.

4. In devices for operating elevator-well doors, two'reversely-toothed plates, K and L, movably secured to the side of the car, one above and moving with the other, but in reverse direction, in combination with an operating-lever, O, substantially as described.

In testimony whereof I afflx my signature in presence of two witnesses.

- JOHN PH. RUN KEL.

Witnesses:

O. T. BENEDICT, O. H. KEENEY. 

